[diyengineer]

Is it just my jeep or does everyone have a dang exhaust leak from the header? I've been through 3 now!

 

[banks316]

Ive welded up 4 cracks in my stock header. This is normal for a 4.0L header

 

[Chris Larabell]

one thing that helps is your thermostat. You can get one that will run about 180 or 200. If you go with the 180, she'll run cooler and do less wear and tear on the manifold.

Unless your already running a 180... does your temp stay on 200 to 205? Or is it down near 180 all the time?

 

[banks316]

but if it she runs below 200 you will burn more fuel cause the ECU doesnt go in to close loop mode